CN202080952U - Anaerobic reaction device - Google Patents

Abstract

The utility model relates to an anaerobic reaction device, which is mainly composed of a regulating tank, an anaerobic reactor, a reflux sedimentation tank and its supporting components. Anaerobic treatment. The regulating tank mainly includes the feeding and discharging device, stirring device and heating device; the anaerobic reactor mainly includes the wall, the top cover, the stirring device, the heating device, the feeding and discharging device and the biogas collection device; the reflux sedimentation tank mainly includes the water feeding and discharging device, solid Liquid-gas separation device and sludge return device. The whole system realizes automatic operation through the PLC control system. The utility model has the advantages of being able to tolerate high-concentration suspended matter organic waste water, effectively improving the quality of effluent water while increasing the biogas yield, simple process, and high degree of resource utilization.

Description

An anaerobic reaction device

technical field

The utility model relates to a waste water treatment device, in particular to an anaerobic reaction device for treating organic waste water with high solid content such as man and animal manure, garbage leachate and kitchen waste. the

Background technique

With the rapid development of national economy and industrial technology, the pollution sources of organic wastewater are increasing day by day. How to effectively treat organic wastewater has become a difficult problem to be solved urgently in the field of international environmental protection technology at this stage. Using anaerobic reaction technology to treat easily biodegradable organic wastewater such as human and animal manure, kitchen waste, landfill leachate, etc., can realize the harmless treatment of sewage and generate biogas and other resources at the same time. Therefore, the technology of anaerobic treatment of organic wastewater has been widely used at home and abroad, and the research of anaerobic reaction devices has become the focus of research in the field of environmental protection technology in various countries. the

When performing anaerobic reaction treatment of organic wastewater, in order to ensure the effect of anaerobic reaction, it is necessary to maintain the sludge concentration in the anaerobic reactor and maintain a good mass transfer effect. The sludge retention time (SRT) and hydraulic retention time (HRT) of the early anaerobic reactor are basically the same, the wastewater retention time is long, and the reactor occupies a large area. Emerging anaerobic reactors represented by upflow anaerobic sludge bed reactor (UASB) and internal circulation anaerobic reactor (IC) have achieved sludge retention time (SRT) greater than hydraulic retention time (HRT), improving The sludge concentration in the reactor was increased, but the mass transfer effect was not good. Due to the limitation of material characteristics, it is difficult to apply the existing anaerobic reactor to exert its due effect when dealing with organic wastewater with high solid content such as human and animal manure and food waste. For example, when anaerobic reactors such as UASB and IC are used to treat organic wastewater, there are restrictions on the solid content of the influent. At present, many domestic measures are taken to separate the organic wastewater from solid and liquid before entering the water, and the separated liquid enters the anaerobic reactor. Simply considering the effect of sewage treatment, this treatment measure is an appropriate way, but considering energy recovery, the gain outweighs the gain. Biogas production during anaerobic treatment is substantially reduced due to the removal of large amounts of organic solids. The application of fully mixed anaerobic reactor (CSTR) can treat organic waste with high solid concentration. CSTR has wide applicability and high biogas yield. There are many application examples in some large-scale biogas projects such as farms at home and abroad. However, CSTR has defects such as long material residence time, too small total volume load, large reactor area, and easy loss of sludge. At the same time, the solid content in the reactor effluent is high, and further solid-liquid separation treatment is required to achieve sewage Processing requirements, so the process is complicated and the energy consumption is high. the

Therefore, it is necessary to develop an anaerobic reaction device that overcomes the deficiencies of the prior art and can simultaneously take into account the purpose of energy recovery with good sewage treatment effect and simple process. the

Contents of the invention

The purpose of the utility model is to provide an anaerobic reaction device, which can not only tolerate the influent with high solid content, but also prevent and control the loss of sludge, and take into account the effects of energy recovery and sewage treatment. the

The utility model is realized through the following technical solutions: the anaerobic reaction device of the utility model is mainly composed of a regulating tank, an anaerobic reactor, a reflux sedimentation tank and supporting components. The regulating tank includes the regulating tank agitator, the regulating tank water inlet, the regulating tank stirring motor, the regulating tank outlet, the water outlet pump, the electromagnetic flowmeter, the fixing ring of the heating coil, the regulating tank heating coil, the regulating tank thermometer; anaerobic The reactor includes wall, top cover, anaerobic water inlet, stirring motor, anaerobic heating coil, anaerobic stirrer, anaerobic water outlet, anaerobic sampling port, anaerobic sludge discharge pipe, anaerobic thermometer, Biogas conduit, water seal, sludge pump; reflux sedimentation tank includes sampling port of reflux sedimentation tank, water inlet of reflux sedimentation tank, water distribution pipe, deflector, three-phase separator, overflow weir, outlet of reflux sedimentation tank, sludge discharge Pipe, sludge return pump, sludge return flow meter, return sedimentation tank sludge outlet; the adjustment tank outlet of the adjustment tank is connected with the anaerobic water inlet of the anaerobic reactor through the outlet pump and pipeline, and the anaerobic reactor The anaerobic water outlet is connected to the water inlet of the reflux sedimentation tank through pipelines, and the sludge discharge pipe of the reflux sedimentation tank is connected to the anaerobic water inlet of the anaerobic reactor through a sludge return pump. the

The adjustment tank is a cylindrical structure, the upper wall of the adjustment tank is provided with the water inlet of the adjustment tank, the lower part is provided with the outlet of the adjustment tank, the outlet of the adjustment tank is connected with the anaerobic water inlet through the pipeline, and the outlet pump and Electromagnetic Flowmeter. A heating coil is installed inside the regulating tank, and is fixed in the regulating tank by the fixing ring of the heating coil. The inlet and outlet of the heating coil are respectively connected to the water outlet and the water return port of the boiler through pipes. A temperature measuring instrument connected to the PLC control system is installed in the regulating pool, and the solenoid valve on the pipeline is controlled by the PLC to open and close the hot water circulation of the boiler so that the temperature of the sewage in the regulating pool is not lower than 25°C. A regulating tank agitator is installed at the center of the top of the regulating tank, which is powered by the stirring motor of the regulating tank to homogenize the sewage entering the regulating tank. the

The anaerobic reactor consists of upper and lower parts, the upper part is a cylinder, and the lower part is a cone, which are connected by welding. An anaerobic mud discharge pipe is provided at the bottom of the cone, and a mud discharge pump is installed on the pipeline outside the anaerobic mud discharge pipe. The lower part of the cylinder is provided with an anaerobic water inlet and an anaerobic sampling port, and the upper part is provided with an anaerobic water outlet. The wall and top cover of the anaerobic reactor are sealed and connected by flanges and gaskets. The anaerobic reactor is a steel structure, but not limited to a steel structure, and can also be a reinforced concrete or enameled steel plate. the

An anaerobic stirrer is installed at the center of the anaerobic reactor, and the anaerobic stirrer is powered by a stirring motor for stirring. The contact part between the stirring motor and the top cover of the reactor is sealed by an oil seal, and the stirrer is a paddle-type stirrer. The anaerobic reactor is coiled with a heating coil, which is fixed in the anaerobic reactor through the heating coil fixing ring. The inlet and outlet of the heating coil are respectively connected to the water outlet and return port of the boiler through pipelines, and the pipelines are equipped with electromagnetic valve. The contents of the anaerobic reactor were maintained at 35±2°C by circulating hot water through the heating coil. An anaerobic thermometer is installed on the top cover of the anaerobic reactor, and the thermometer is connected to the PLC control system. When the temperature exceeds or falls below 35±2°C, the PLC control system automatically closes or opens the solenoid valve on the heating pipe for regulation Hot water circulation. the

The top cover of the anaerobic reactor is provided with a biogas outlet, and one end of the biogas conduit extends into the anaerobic reactor through the biogas outlet, and guides the biogas generated during the anaerobic reaction into the biogas storage bag for standby. The biogas outlet and the biogas conduit are sealed and connected by welding. the

The reflux sedimentation tank is a cylindrical structure. The middle part of the pool wall is provided with the water inlet of the backflow sedimentation tank, and the water distribution pipe is installed at the bottom of the interior, and is connected with the water inlet of the backflow sedimentation tank through the pipe. The water distribution pipe is provided with a water distribution hole in an oblique downward direction of 45 degrees. the

A deflector is arranged in the middle of the inner wall of the reflux sedimentation tank, and a three-phase separator is installed above the deflector. Under the action of deflector and three-phase separator, the upstream sludge, biogas and liquid are separated. the

There is a sludge discharge pipe at the bottom of the reflux sedimentation tank, and a three-way joint is installed on the mud discharge pipe. One outlet of the three-way joint is connected to the sludge return pump, and a certain amount of sludge is returned to the anaerobic reactor every day to supplement the reaction. amount of sludge in the container. The other outlet is a sludge discharge port to remove the remaining sludge. the

Description of drawings

Accompanying drawing 1 is the schematic diagram of anaerobic reaction device of the present utility model, and accompanying drawing 2 is the schematic diagram of heating system. the

In the figure 1. Regulating tank, 2. Anaerobic reactor, 3. Return sedimentation tank, 1.1. Regulating tank agitator, 1.2. Regulating tank water inlet, 1.3. Regulating tank stirring motor, 1.4. Regulating tank outlet, 1.5, Outlet pump, 1.6, electromagnetic flowmeter, 1.7, fixing ring of heating coil, 1.8, heating coil of regulating pool, 1.9, temperature measuring instrument of regulating pool, 2.1, wall, 2.2, top cover, 2.3, anaerobic water inlet, 2.4, stirring motor, 2.5, anaerobic heating coil, 2.6, anaerobic mixer, 2.7, anaerobic water outlet, 2.8, anaerobic sampling port, 2.9, anaerobic sludge discharge pipe, 2.10, anaerobic thermometer, 2.11, biogas conduit, 2.12, water seal, 2.13, sludge pump, 3.1, sampling port of return sedimentation tank, 3.2, water inlet of return flow sedimentation tank, 3.3, water distribution pipe, 3.4, deflector, 3.5, three-phase separator, 3.6, overflow weir, 3.7, outlet of return sedimentation tank, 3.8, sludge discharge pipe, 3.9, sludge return pump, 3.10, sludge return flow meter, 3.11, outlet of return sedimentation tank. the

Detailed ways

The utility model is described in detail below in conjunction with accompanying drawing 1 and accompanying drawing 2 and an embodiment. the

Referring to the accompanying drawings, the utility model is mainly composed of a regulating tank 1, an anaerobic reactor 2 and a reflux sedimentation tank 3 connected by pipelines, valves and pumps. the

All solenoid valves, pumps, agitator drives, and thermometers are connected to a PLC control system. The process parameters are set through the PLC control system to realize the automatic operation of the system. the

Regulating tank 1 includes regulating tank agitator 1.1, regulating tank water inlet 1.2, regulating tank stirring motor 1.3, regulating tank water outlet 1.4, water outlet pump 1.5, electromagnetic flowmeter 1.6, heating coil fixing ring 1.7, regulating tank heating coil 1.8 And conditioning pool thermometer 1.9. the

The regulating pool 1 is a cylindrical stainless steel structure. A regulating pond agitator 1.1 is installed at the center of the top of the regulating pond 1. The regulating pond agitator 1.1 is composed of a blade and a paddle rod, powered by the regulating pond agitating motor 1.3, and homogenizes the sewage entering the regulating pond by stirring. The water inlet 1.2 of the regulating pool is opened on the wall of the upper part of the regulating pool 1, and the water outlet of the regulating pool 1.4 is opened on the wall of the lower part of the regulating pool 1, and the water outlet 1.4 of the regulating pool passes through the anaerobic water inlet of the anaerobic reactor 2 2.3 is connected, and outlet pump 1.5 and electromagnetic flowmeter 1.6 are installed on this pipeline. Under the control of the PLC, the homogenized and preheated sewage in the regulating tank to not less than 25°C is sent from the anaerobic water inlet 2.3 to the anaerobic reactor 2 through the outlet pump 1.5, and the sewage is promptly discharged from the regulating pond water inlet 1.2 Make up the corresponding amount of sewage with high suspended solid content to be treated. The amount of sewage sent into the anaerobic reactor 2 is recorded and displayed by the electromagnetic flowmeter 1.6. the

The regulating pool 1 is coiled with a regulating pool heating coil 1.8, and the regulating pool heating coil 1.8 is fixed in the regulating pool 1 through the heating coil fixing ring 1.7. The inlet and outlet of the heating coil 1.8 of the regulating pool are connected to the water outlet and return port of the boiler through pipes, and the sewage in the regulating pool 1 is heated by the circulation of the hot water in the boiler in the coil. The regulating pool temperature measuring instrument 1.9 connected with the PLC control system is installed in the regulating pool, and the solenoid valve on the pipeline is controlled by the PLC to open and close the hot water circulation of the boiler, so that the temperature of the sewage in the regulating pool is not lower than 25°C. the

Anaerobic reactor 2 includes wall 2.1, top cover 2.2, anaerobic water inlet 2.3, stirring motor 2.4, anaerobic heating coil 2.5, anaerobic stirrer 2.6, anaerobic water outlet 2.7, anaerobic sampling port 2.8, anaerobic Oxygen mud discharge pipe 2.9, anaerobic thermometer 2.10, biogas conduit 2.11, water seal 2.12 and mud discharge pump 2.13. the

The anaerobic reactor 2 in this embodiment is a stainless steel structure, but in practical applications, the material of the anaerobic reactor 2 is not limited to a stainless steel structure, and may also be a reinforced concrete structure or an enamelled steel plate structure. The wall 2.1 and the top cover 2.2 of the anaerobic reactor 2 are airtightly connected by flanges and gaskets. The wall 2.1 of the anaerobic reactor 2 is composed of upper and lower parts, the upper part is a cylinder, and the lower part is a cone, which are connected by welding. the

The anaerobic heating coil 2.5 is coiled about 2 cm away from the inner wall of the anaerobic reactor 2, and the anaerobic heating coil 2.5 is fixed in the anaerobic reactor 2 through the heating coil fixing ring. The inlet and outlet of the anaerobic heating coil 2.5 are connected with the water outlet and the water return port of the boiler through pipelines, and electromagnetic valves are installed on the pipelines. Through the heating effect of the hot water in the coil, the temperature of the material in the anaerobic reactor 2 is guaranteed to be stable at 35±2°C. An anaerobic thermometer 2.10 connected to the PLC control system is installed on the top cover 2.2 to monitor the temperature inside the anaerobic reactor 2 in real time. When the temperature exceeds or falls below 35±2°C, the PLC control system automatically closes or opens The solenoid valve on the heating pipeline is regulated. the

An anaerobic stirrer 2.6 is installed in the middle of the top cover 2.2 of the anaerobic reactor 2, and the anaerobic stirrer 2.6 is driven by a stirring motor 2.4, and the contact between the stirring motor 2.4 and the top cover 2.2 is sealed with an oil seal. The anaerobic mixer 2.6 has three layers of blades, but is not limited to three layers of blades, and can be two layers or four layers. After each water in and out, start the agitator to stir for 20 minutes to make the sewage and sludge fully contact and increase the reaction speed. the

The anaerobic water outlet 2.7 is located on the upper part of the device wall 2.1, and is connected with the water inlet 3.2 of the reflux sedimentation tank through a pipeline. When the homogenized and preheated sewage in the regulating tank 1 enters from the anaerobic water inlet 2.3 located at the lower part of the wall 2.1, the liquid level in the reactor rises, and the supernatant flows out from the anaerobic water outlet 2.7 and passes through the pipeline , The water inlet 3.2 of the backflow sedimentation tank and the water distribution pipe 3.3 flow into the backflow sedimentation tank 3 . the

In this embodiment, 5 anaerobic sampling ports 2.8 are provided below the side of the wall 2.1, which are respectively connected to 5 sampling tubes of different heights in the anaerobic reactor by welding to take samples of different heights in the reactor. . the

The bottom of the conical body of the anaerobic reactor 2 is provided with an anaerobic sludge discharge pipe 2.9, and a sludge discharge pump 2.13 is installed on the pipeline outside the anaerobic sludge discharge pipe 2.9, and the sludge discharge pump 2.13 is started regularly to discharge excess sludge to the waste water. mud collection pond. the

The top cover 2.2 of the anaerobic reactor 2 is provided with a biogas outlet, and one end of the biogas conduit 2.11 is inserted into the biogas outlet, extending into the anaerobic reactor 2, and the other end is connected to the biogas storage bag through a water seal 2.12. The biogas generated during the anaerobic reaction passes through the biogas conduit 2.11 and the water seal 2.12 and then enters the biogas storage bag for standby. The biogas outlet and the biogas conduit 2.11 are sealed and connected by welding. the

The reflux sedimentation tank 3 includes the sampling port 3.1 of the reflux sedimentation tank, the water inlet 3.2 of the reflux sedimentation tank, the water distribution pipe 3.3, the deflector 3.4, the three-phase separator 3.5, the overflow weir 3.6, the outlet of the reflux sedimentation tank 3.7, and the mud discharge pipe 3.8 , sludge return pump 3.9, sludge return flow meter 3.10, return sedimentation tank sludge outlet 3.11. the

The backflow sedimentation tank 3 is a cylindrical steel structure, and the middle part of the pool wall is provided with a backflow sedimentation tank water inlet 3.2, and a water distribution pipe 3.3 is installed at the bottom of the interior, and the water distribution pipe 3.3 is connected to the backflow sedimentation tank water inlet 3.2 through a pipeline. The water distribution pipe 3.3 is provided with a water distribution hole in an obliquely downward direction of 45 degrees. The supernatant liquid flowing out through the water outlet 2.7 of the anaerobic reactor is evenly introduced into the lower part of the backflow sedimentation tank through the water inlet 3.2 of the backflow sedimentation tank and the water distribution holes on the water distribution pipe 3.3. Sampling ports 3.1 of the reflux sedimentation tank are provided at different heights outside the pool wall of the reflux sedimentation tank 3, and samples at different heights inside can be taken. A deflector 3.4 is provided in the middle of the inner wall of the reflux sedimentation tank 3, and a three-phase separator 3.5 is installed above the deflector 3.4. Under the action of the deflector 3.4 and the three-phase separator 3.5, the upstream sludge and biogas are separated from the liquid, and the liquid passes through the overflow weir 3.6, and is exported from the outlet 3.7 of the reflux sedimentation tank to the subsequent sewage treatment process. Oxygen treatment, the biogas enters the gas chamber, and is introduced into the biogas storage bag through the biogas conduit 2.11 and the water seal 2.12, and the sludge re-settles to the bottom of the reflux sedimentation tank 3. the

The bottom of the backflow sedimentation tank 3 is equipped with a sludge discharge pipe 3.8, and a three-way joint is installed on the mud discharge pipe 3.8. An outlet of the three-way joint is connected to the anaerobic water inlet 2.3 through a pipeline, and the sludge return pump 3.9 is regularly passed every day. And the sludge return flow meter 3.10 returns a certain amount of sludge to the anaerobic reactor 2 to supplement the amount of sludge in the reactor 2. The other outlet of the three-way joint is the sludge discharge port 3.11 of the return sedimentation tank, through which excess sludge is discharged to the sludge collection tank for unified treatment. the

All equipment and pipelines in the system are wrapped with thermal insulation cotton to ensure the normal operation of the equipment in winter when the temperature is low. the

Claims (6)

1. anaerobic reaction device, be by equalizing tank (1), anaerobic reactor (2) and reflux sedimentation tank (3) and matching component thereof are formed by connecting, and it is characterized in that: equalizing tank (1) comprises equalizing tank agitator (1.1), equalizing tank water-in (1.2), equalizing tank agitator motor (1.3), equalizing tank water outlet (1.4) goes out water pump (1.5), magnetic flow meter (1.6), heating coil set collar (1.7), equalizing tank heating coil (1.8), equalizing tank temperature measurer (1.9); Anaerobic reactor (2) comprises wall (2.1), top cover (2.2), anaerobism water-in (2.3), agitator motor (2.4), anaerobism heating coil (2.5), anaerobism agitator (2.6), anaerobism water outlet (2.7), anaerobism thief hole (2.8), anaerobism shore pipe (2.9), anaerobism temperature measurer (2.10), biogas conduit (2.11), water seal (2.12), sludge pump (2.13); Reflux sedimentation tank (3) comprises reflux sedimentation tank thief hole (3.1), reflux sedimentation tank water-in (3.2), water distributor (3.3), flow deflector (3.4), triphase separator (3.5), overflow weir (3.6), reflux sedimentation tank water outlet (3.7), shore pipe (3.8), sludge reflux pump (3.9), mud return flow meter (3.10), reflux sedimentation tank mud discharging mouth (3.11); The equalizing tank water outlet (1.4) of equalizing tank (1) links to each other with the anaerobism water-in (2.3) of anaerobic reactor (2) with pipeline by going out water pump (1.5), the anaerobism water outlet (2.7) of anaerobic reactor (2) links to each other with the reflux sedimentation tank water-in (3.2) of reflux sedimentation tank (3) by pipeline, and the shore pipe (3.8) of reflux sedimentation tank (3) links to each other by sludge reflux pump (3.9) with the anaerobism water-in (2.3) of anaerobic reactor (2).

2. anaerobic reaction device according to claim 1 is characterized in that: equalizing tank (1) is inner to be fixed with equalizing tank heating coil (1.8) by heating coil set collar (1.7).

3. anaerobic reaction device according to claim 1 is characterized in that: the inside of anaerobic reactor (2) is fixed with anaerobism heating coil (2.5) by the heating coil set collar.

4. anaerobic reaction device according to claim 1 is characterized in that: the wall (2.1) of anaerobic reactor (2) is connected with washer sealing by flange with top cover (2.2).

5. anaerobic reaction device according to claim 1 is characterized in that: the wall (2.1) of anaerobic reactor (2) is made up of two portions up and down, and top is right cylinder, and the lower section is a cone, joins by welding.

6. anaerobic reaction device according to claim 1 is characterized in that: the anaerobism temperature measurer (2.10) that links to each other with the PLC Controlling System is installed on the top cover (2.2) of anaerobic reactor (2).

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